1045 Michela

Main-belt asteroid March 2018 yes 1045 Michela #D6D6D6 G. van Biesbroeck Yerkes Obs. 19 November 1924 (1045) Michela 1924 TR1953 VB 21964 XJ1976 AL Micheline van Biesbroeck(discoverer's daughter) main-belt(inner)Massalia 23 March 2018 (JD 2458200.5) 0 63.64 yr (23,246 d) 2.7348 AU 1.9811 AU 2.3580 AU 0.1598 3.62 yr (1,323 d) 259.96° 0.2722 ms / day 0.2648° 267.71° 166.97° 1 6.104 0.265 km 0.328 0.077 SMASS S 13.0 1045 Michela, provisional designation 1924 TR, is an stony, binary, Massalian asteroid from the inner regions of the asteroid belt, approximately 6 km mi off 1 us in diameter. It was discovered on 19 November 1924, by Belgian–American astronomer George Van Biesbroeck at the Yerkes Observatory in Williams Bay, Wisconsin, United States. The S-type asteroid was named after the discoverer's daughter, Micheline van Biesbroeck. Orbit and classification Michela is a member of the Massalia family (404), a very large inner belt asteroid family consisting of stony asteroids. It orbits the Sun in the inner main-belt at a distance of 2.0–2.7 AU once every 3 years and 7 months (1,323 days; semi-major axis of 2.36 AU). Its orbit has an eccentricity of 0.16 and an inclination of 0° with respect to the ecliptic. The asteroid's observation arc begins with its observation as 1953 VB 2 at the Goethe Link Observatory in November 1953, or 29 years after its official discovery observation. Physical characteristics In the SMASS classification, Michela is a common, stony S-type asteroid, which is also the overall spectral type for Massalian asteroids.23 Diameter and albedo According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Michela measures 6.104 kilometers in diameter and its surface has an albedo of 0.328. Rotation period As of 2018, no rotational lightcurve of Michela has been obtained from photometric observations. The body's rotation period, poles and shape remain unknown. Satellite On 9 October 2025, a team of astronomers including D. Gault, D. Herald, C. McPartlin, and C. Weber, discovered a natural satellite orbiting Michela from occultation observations from Goleta, California. The orbital period of this moon is estimated to be 2.2 days, with a diameter of less than 2.2 kilometers. As of 2026, the moon of Michela remains unnamed and undesignated.(1045) Michela https://www.johnstonsarchive.net/astro/astmoons/am-01045.html 2026-08-25 www.johnstonsarchive.net Naming This minor planet was named after Micheline van Biesbroeck, daughter of the discoverer George Van Biesbroeck. The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 99). References 30em 2017-07-04 last obs. JPL Small-Body Database Browser: 1045 Michela (1924 TR) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001045 Jet Propulsion Laboratory 20 March 2018 Schmadel Lutz D. Dictionary of Minor Planet Names Springer Berlin Heidelberg 89 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1046 (1045) Michela 1045 Michela (1924 TR) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1045 20 March 2018 Asteroid 1045 Michela – Nesvorny HCM Asteroid Families V3.0 Small Bodies Data Ferret https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=1045+Michela 24 October 2019 3 October 2020 https://web.archive.org/web/20201003195243/https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=1045+Michela dead D. Nesvorný M. Broz V. Carruba December 2014 Identification and Dynamical Properties of Asteroid Families Asteroids IV 297–321 2015aste.book..297N 10.2458/azu_uapress_9780816532131-ch016 1502.01628 978-0-8165-3213-1 6 Joseph R. Masiero A. K. Mainzer T. Grav J. M. Bauer R. M. Cutri J. Dailey P. R. M. Eisenhardt R. S. McMillan T. B. Spahr M. F. Skrutskie D. Tholen R. G. Walker E. L. Wright E. DeBaun D. Elsbury T. IV Gautier S. Gomillion A. Wilkins November 2011 Main Belt Asteroids with WISE/NEOWISE. I. Preliminary Albedos and Diameters http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2011ApJ...741...68M The Astrophysical Journal 741 2 20 2011ApJ...741...68M 10.1088/0004-637X/741/2/68 1109.4096 20 March 2018 External links Asteroid Lightcurve Database (LCDB), query form (info https://web.archive.org/web/20171216050541/http://www.minorplanet.info/lightcurvedatabase.html 16 December 2017 ) Dictionary of Minor Planet Names, Google books Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center 1045 1044 Teutonia 1045 1046 Edwin 001045 Category:Discoveries by George Van Biesbroeck Category:Named minor planets 001045 19241119 Category:Binary asteroids